Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Neil Turner0
Derek Graeme Madgewick Savidge0
Graeme Huntley0
Date of Patent
September 5, 2006
0Patent Application Number
104384270
Date Filed
May 15, 2003
0Patent Primary Examiner
Patent abstract
A vacuum pump system (10; 36; 46) for pumping gas from an enclosure (12) comprises: a vacuum pump unit (14) having a pump inlet (16) connectable with an outlet (18) of such an enclosure and a pump outlet (20) for exhausting gas; and a chamber (22; 50) selectively connectable with the pump inlet and the pump outlet, such that, in use, in a first state gas can be pumped from the chamber to the pump inlet by the vacuum pump unit and in a second state gas can be evacuated from the pump outlet to the chamber to reduce pressure at the pump outlet.
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